Specifications
| Type | Description |
|---|---|
| Part Number | OPA340 |
| Manufacturer | Texas Instruments |
| Product Type | Operational Amplifier |
| Category | Signal Chain |
| Component Type | Other |
| Package Case | SOT-23-5 3.00 mm x 3.00 mm; PDIP-8 9.81 mm x 6.35 mm; SOIC-8 4.90 mm x 3.91 mm |
| Amplifier Configuration | single operational amplifier; condition: OPA340 variant |
| Input Type | rail-to-rail input; condition: device feature |
| Output Type | rail-to-rail output; condition: device feature |
| Minimum Single-Supply Operation | 2.5 V; condition: operating capability described in overview |
| Recommended Supply Voltage | 2.7 V to 5.5 V; condition: recommended operating conditions |
| Specified Voltage Range | 2.7 V to 5 V; condition: electrical characteristics |
| Operating Voltage Range | 2.5 V to 5.5 V; condition: electrical characteristics |
| Absolute Maximum Supply Voltage | 5.5 V max; condition: absolute maximum ratings |
| Input Common-Mode Voltage Range | -0.3 V to (V+) + 0.3 V; condition: electrical characteristics |
| Input Common-Mode Extension | 500 mV below ground to 500 mV above positive supply; condition: description text |
| Input Offset Voltage | ±150 µV typ, ±500 µV max; condition: VS=5 V, TA=25°C |
| Input Offset Voltage Drift | ±2.5 µV/°C typ; condition: TA=-40°C to 85°C, VS=5 V |
| Power-Supply Rejection Ratio | 30 µV/V typ, 120 µV/V max; condition: VS=2.7 V to 5.5 V, VCM=0 V |
| Input Bias Current | ±0.2 pA typ, ±10 pA max; condition: TA=25°C |
| Input Bias Current Over Temperature | ±60 pA max; condition: TA=-40°C to 85°C, VS=5 V |
| Input Offset Current | ±0.2 pA typ, ±10 pA max; condition: TA=25°C |
| Input Voltage Noise | 8 µVRMS typ; condition: f=0.1 kHz to 50 kHz |
| Input Voltage Noise Density | 25 nV/√Hz typ; condition: f=1 kHz |
| Current Noise Density | 3 fA/√Hz typ; condition: f=1 kHz |
| Common-Mode Rejection Ratio | 80 dB min, 92 dB typ; condition: -0.3 V < VCM < (V+) - 1.8 V |
| Common-Mode Rejection Ratio | 70 dB min, 84 dB typ; condition: VS=5 V, -0.3 V < VCM < 5.3 V |
| Common-Mode Rejection Ratio | 66 dB min, 80 dB typ; condition: VS=2.7 V, -0.3 V < VCM < 3 V |
| Differential Input Impedance | 10^13 Ω || 3 pF; condition: electrical characteristics |
| Common-Mode Input Impedance | 10^13 Ω || 6 pF; condition: electrical characteristics |
| Open-Loop Voltage Gain | 106 dB min, 124 dB typ; condition: RL=100 kΩ, 5 mV < VO < (V+) - 5 mV |
| Open-Loop Voltage Gain | 100 dB min, 120 dB typ; condition: RL=10 kΩ, 5 mV < VO < (V+) - 50 mV |
| Open-Loop Voltage Gain | 94 dB min, 114 dB typ; condition: RL=2 kΩ, 200 mV < VO < (V+) - 200 mV |
| Gain-Bandwidth Product | 5.5 MHz typ; condition: G=1 |
| Slew Rate | 6 V/µs typ; condition: VS=5 V, G=1, CL=100 pF |
| Settling Time To 0.1% | 1 µs typ; condition: VS=5 V, 2-V step, CL=100 pF |
| Settling Time To 0.01% | 1.6 µs typ; condition: VS=5 V, 2-V step, CL=100 pF |
| Overload Recovery Time | 0.2 µs typ; condition: VIN x G = VS |
| Total Harmonic Distortion Plus Noise | 0.0007% typ; condition: VS=5 V, VO=3 VPP, G=1, f=1 kHz |
| Output Voltage Swing From Rail | 1 mV typ, 5 mV max; condition: RL=100 kΩ, AOL ≥ 106 dB |
| Output Voltage Swing From Rail | 10 mV max; condition: RL=10 kΩ, AOL ≥ 106 dB |
| Output Voltage Swing From Rail | 40 mV max; condition: RL=2 kΩ, AOL ≥ 106 dB |
| Short-Circuit Current | ±50 mA typ; condition: electrical characteristics |
| Quiescent Current Per Amplifier | 750 µA typ, 950 µA max; condition: IO=0, VS=5 V |
| Specified Temperature Range | -40°C to 85°C; condition: electrical characteristics |
| Operating Temperature Range | -55°C to 125°C; condition: electrical characteristics |
| Storage Temperature Range | -55°C to 125°C; condition: electrical characteristics |
| ESD Rating HBM | ±600 V; condition: per ANSI/ESDA/JEDEC JS-001 |
| ESD Rating CDM | ±250 V; condition: per JEDEC JESD22-C101 |
| SOT-23 Thermal Resistance Junction-To-Ambient | 207.9°C/W; condition: OPA340 DBV package, 5 pins |
| PDIP Thermal Resistance Junction-To-Ambient | 53.1°C/W; condition: OPA340 P package, 8 pins |
| SOIC Thermal Resistance Junction-To-Ambient | 142°C/W; condition: OPA340 D package, 8 pins |
| Datasheet Status | request_only |
Product Overview
The OPA340 is a Texas Instruments rail-to-rail operational amplifier in the Signal_Chain category. The OPA340 variant is a single operational amplifier with rail-to-rail input and rail-to-rail output capability. Its input common-mode behavior includes extension from 500 mV below ground to 500 mV above the positive supply, with an electrical-characteristics range of -0.3 V to (V+) + 0.3 V.
Supply operation is specified across low-voltage rails. The device is described for 2.5 V minimum single-supply operation, with recommended operating conditions of 2.7 V to 5.5 V, a specified voltage range of 2.7 V to 5 V, and an operating voltage range of 2.5 V to 5.5 V. Dynamic specifications include 5.5 MHz typical gain-bandwidth product, 6 V/µs typical slew rate, 1 µs typical settling to 0.1%, and 1.6 µs typical settling to 0.01%.
Package options include SOT-23-5, PDIP-8, and SOIC-8 formats. Thermal resistance junction-to-ambient is listed as 207.9°C/W for SOT-23, 53.1°C/W for PDIP, and 142°C/W for SOIC. These facts support use in compact low-voltage signal conditioning, buffering, and analog front-end circuits.
Key Features
- Single operational amplifier configuration for OPA340 variant
- Rail-to-rail input and rail-to-rail output operation
- 2.7 V to 5.5 V recommended supply voltage
- 2.5 V minimum single-supply operating capability
- 5.5 MHz typical gain-bandwidth product at unity gain
- 6 V/µs typical slew rate at 5 V supply
- ±150 µV typical input offset voltage at 25°C
- ±0.2 pA typical input bias current at 25°C
- 0.0007% typical THD+N at 1 kHz
- 750 µA typical quiescent current per amplifier
- SOT-23-5, PDIP-8, and SOIC-8 package options
- -55°C to 125°C operating temperature range
Typical Applications
- Low-voltage signal conditioning
- Rail-to-rail analog buffering
- Sensor interface amplifier stages
- Precision analog front ends
- Single-supply active filters
- Low-bias-current input circuits
- Audio-frequency gain stages
- Compact SOT-23 amplifier layouts
Procurement Notes
When requesting a quote for OPA340, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For analog and signal-chain sourcing, supply voltage, bandwidth, accuracy, noise level, package, temperature grade, input/output configuration and qualification requirements should be verified before approval.
FAQ
What type of amplifier is the OPA340?
The OPA340 is a Texas Instruments rail-to-rail operational amplifier. The OPA340 variant is specified as a single operational amplifier with rail-to-rail input and rail-to-rail output operation.
What supply voltage range is recommended for OPA340?
The recommended supply voltage is 2.7 V to 5.5 V. The datasheet facts also list 2.5 V minimum single-supply operation, a 2.5 V to 5.5 V operating range, and 5.5 V absolute maximum supply voltage.
Which package options are listed for OPA340?
The listed package options are SOT-23-5 measuring 3.00 mm x 3.00 mm, PDIP-8 measuring 9.81 mm x 6.35 mm, and SOIC-8 measuring 4.90 mm x 3.91 mm.
What are key dynamic specifications for OPA340?
Key dynamic specifications include 5.5 MHz typical gain-bandwidth product at G=1, 6 V/µs typical slew rate with VS=5 V, 1 µs typical settling to 0.1%, and 1.6 µs typical settling to 0.01%.
What input current and noise values are specified?
At 25°C, input bias current is ±0.2 pA typical and ±10 pA maximum. Input voltage noise is 8 µVRMS typical from 0.1 kHz to 50 kHz, with 25 nV/√Hz typical voltage noise density at 1 kHz.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.